Malicious PDF — malware analysis report

Static analysis result for SHA-256 32504d5af49a639a…

MALICIOUS

PDF

69.5 KB Created: 2020-08-09 22:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 543dbda2d8430fa07f5b125d6744f42c SHA-1: 961b1c8439e37aabc7e52420d8224579c4a2db0b SHA-256: 32504d5af49a639a3fe3073db1a29f27165429bf68a663af5bf1399870d1856a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ascariasis+disease+pdf'. This URL is embedded within the document body, suggesting an attempt to lure the user to a malicious site under the guise of providing information. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the most critical IOC.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=ascariasis+disease+pdf
    • http://files.juiceboxventures.com/uploads/1/3/1/6/131637853/juvifexefodupar.pdf
    • http://files.globalsafetymalta.com/uploads/1/3/0/8/130814402/850d4895036b09.pdf
    • http://files.lauraduggantherapy.com/uploads/1/3/2/6/132683181/zakesanulop.pdf
    • http://files.iheartbookpublishing.com/uploads/1/3/1/4/131483147/posegoji_kifibonawuwapa_wuxaxapopugale_bozudolimapediz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/pojipemuxidivisamaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1880/files/conductive_materials.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/cateterismo_cardiaco_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/nuxapopitaduwenoxin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1304/files/pedijofagediwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7466/files/xenulekamerugosurevuluro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/13437199376.pdf
    • https://cdn.shopify.com/s/files/1/0440/2325/1094/files/eliciting_sounds_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/zubuvujadimafaguz.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/mopixapu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d45a.bin
7c02b7881e3a0bf246d3f64ed743c3d86533506280ef0f471393ce43cfa9ac4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD45A 5104 bytes
font_01_sfnt_off0000e5cb.bin
fdae5b4c1b04ef78684fe7e5c20d85ac0350ded8a821155fd0c419925468c01f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CB 10476 bytes

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